balboa and people ran regular service downtown and each of the incidents we could point to the scheduled benefit was, and you have to look at these things again. these are a recovery technique, so they're not something that we go in and plan everyday and we're going to have 15 -- our target is 15 switchbacks. our target is ten. >> that seems like anecdotal evidence. did you provide the grand jury with empirical evidence? those are the findings here. i am asking about that. >> like i said we don't agree with that particular finding but if you go down, and we provided substantial amount of information, notebooks, discs, but we are happy to go through each of the incidents and took a particular month, and again took september and 182 switchbacks.